Explosive.



STATEd PATENT @FFEQE.

IH AQVEY PERRY BOSTAFH, OF WINWCB, ONTARZU, .GANAIDA.

EX'PLOSI'VE.

1,938,275. Specification of Letters Patent. No Drawing.

To all whom it may concern:

Be itknown that LHAnvEr P. BosrArn,

l a citizen of the United States, residing at rVindsor, Province of Ontario, Dominion of Canada, have invented a new and useful Explosive, of which the following is a specification.

This invention has reference to improvements in explosives, and its object is to provide an explosive of high power having all the best qualities of explosives like dynamite and blasting powders, but possessing none of the faults of such explosives. The explosive of the present invent-ion is not sensitive to ordinary friction or shock, is not affected by heat, will not freeze, is not afiected by moisture, gives-oi? no noxious gases when exploded, is not rendered dangerous by and does not materially de teriorate from age, is particularly adapted for storage, and is'comparatively cheap and safe to manufacture.

The improved explosive compound comprises perchlorate of ammonia, dinit-robenacne, nitrate of soda, wood meal, and rosin.

While not confined strictly to exact proportions, it has been found that most excellent results are obtained by compounding the explosive in the followingproportionsI Perchlorate of ammoniaii? per cent.

compound the chemicals that the perchlorate of through an 80 mesh or To prepare the are pulverized so ammonia will pass smaller mesh screen and good results have been obtained when the screen is of 100 mesh. The dinitrobenzene should be pulverized to pass through a mesh or smaller mesh screen, and good results have been ob tained with a mesh screen. The nitrate of soda should be pulverized to hrough a 60 mesh or smaller mcslv screen, and good results have been obtained by the use of an mesh screen. The wood meal should pass througha 40 mesh or smaller mesh screen, and good results have been obtained with a 60 mesh screen. The rosin should he pulverized to pass through a 30 mesh or smaller mesh screen, and good results have been obtained by the use of a 40 mesh screen.

After the several ingredients have been thoroughly dried, pulverized and screened as stated, the rosin is first mixed With the wood meal, and then these two ingredients are mixed with all the other ingredients together.

From extensive tests it has; been found that the proportions given produce the best results, while the rosin employed distributes the detonatlons to the whole of the su'o-.

stance, but does not affect the safetyfofthe compound. It has been found that if the rosin be omitted the compound is not reliable and in many instances Will not explode when detonated, and sometimes explodes.

only in part. Too much rosin lowersthe safety factor. Furthermore, exhaustive tests have demonstrated the necessity of pulverizing the ingredients so they pass through the screens as described, and that they should be absolutely dry before being mixed together, the degree of pulverization named having been found to increase the strength of the-explosion as much as per cent, and when not so compounded the explosive is so unreliable as to refuse to explode at all in many instances.

What is claimed is:-

1. An explosive compound comprising perchlorate of ammonia, dinitrobenzene, nitrate of soda, Wood meal and rosin.

An explosive compound comprising in every hundred parts perchlorate of ammonia 37 parts, dinitrobenzene 11 parts, nit-rate of soda 43 parts, Wood meal 8 parts, and rosin 1 part.

3. The method of compounding explosites which consists in pulverizing perchlorate of ammonia to a fineness which will pass through a screen not larger than 80 mesh, pulverizing dinitrobenzene to pass through a screen not larger than 50 mesh, pulverizing nitrate of soda to pass through a screen not larger than 60 mesh, producing Wood meal to pass through a screen not larger than M) mesh, pulverizing rosin to pass through a screen not larger than 30 mesh, and then mixing such materials.

i. The method of compounding explosives which consists in pulveriiaing perchlorate of ammonia to a fineness which will pass through a screen not larger than 8U mesh, pulverizing Patented Sept. to, 191.2.

Application filed April 11, 1912. Serial No. 690,214. l

dinitrohelmine to pass through a screen not liirger than 50 mesh,

pulverizing nitrate of soda to pass through a screen not larger than 60 mesh, producing wood meal to pass through a screen not larger than 40 mesh, pulverizing rosin to pass through a screen not larger than 30 mesh, and then mixing such materials by first mixing the rosin with the wood meal and then mixing the two ingredients so mixed with the other ingredients.

5. The method of prepsringan explosive compound which consists 1n mixing together one part of rosin to eflfineness topass through. a mesh screen, with eight parts of wood meal of a fineness to pass throu h a, mesh screen, and incorporating t e mixture so formed with 37 parts of per chlorate of ammonia of a fineness topa-ss through a 100'mesh sreen, 11 parts of dinitrohenzene'of a fineness $0 pass through a 60 meshscreen, and 443 parts of nitrate of 7 soda of a fineness to pass through an mesh screen.

6'. An explosive compound 'comprising a mixture :of perchlorate of ammonia in a conditioniof fineness to pass through a mesh screen, dinitrobenzene in the condition of fineness to pass through a 60 mesh screen, nitrate of'soda of a fineness to ass through an 80 mesh screen wood mea of a fineness top'ass through a 60 mesh screen, and rosin of a fineness to pass through a 40 mesh screen."

In testimony, that I claim the foregoing as my own, I have hereto aflixed my signs-- ture in the presence of two witnesses.

HARVEY PERRY BOSTAPH. -Witnesses: E. S. TIMONS', MARIE GREER. 

